We just release an update for The Wedding (v1.1.4) and Celebizz (v.1.0.3) theme, both themes now comes with responsive layout. As for Celebizz we also do a minor tweak on the design, just a minor gradient changes to make the theme look better.
You can download these updates by logging in to our support forum. We also plan to update other themes to have responsive layout.
At least 1 new theme will be release this month, so stay tune!